HELIASTUS. 189 



bb. Disc of wings pale greenish-yellow or hyaline. Sexes very unequal 

 in size. 

 c. Antennae at least two-thirds as long as the hind femora. 

 Descending lobes of the pronotum apically well rounded. 

 d. Tegmina and wings elongate, extending much beyond the 



apex of the abdomen in both sexes 7. aridus, Bruner. 



dd. Tegmina and wings shorter, only slightly surpassing the tip of 



the abdomen 8. californicus, Thom. 



cc. Antennas only half as long as the hind femora. Descending 



lobes of the pronotum apically truncate [9. minimus, Scudd.] 



1. Heliastus sumichrasti, Sauss. 



(Edipoda sumichrasti, Sauss. Rev. et Mag. Zool. 18G1, p. 824 l ; Thomas, Acrid. N. Am. p. 214 



(1873) 2 . 

 Heliastus sumichrasti, Sauss. Prodr. (Edip. p. 213 (1884) 3 ; Addit. Prodr. (Edip. p. 90 (1888) 4 ; 



Caudell, Proc. U.S. Nat. Mus. xxvii. p. 951 (1904) 5 . 

 (Edipoda speciosa, Walk. Cat. Derm. Salt. Brit. Mus. iv. pp. 735, 736 (1870) 6 . 

 (Edipoda tentatrios, Walk. op. cit. v., Suppl. pp. 74, 75 (1871) 7 . 



Hah. North America, Texas 5 . — Mexico x 3 4 , temperate and hot regions, widely 

 distributed, Oaxaca 7 ; Guatemala 1 3 4 ; Honduras 1346 . 



This is the commonest and by far the most widely distributed representative of the 

 genus, and if we regard II. guatemalce, H. Venezuela?, and H. costaricensis as varieties 

 of it, the most variable as well. To this species also belong (Edipoda tentatrix and 

 (E, speciosa, Walk. 



2. Heliastus guatemalae, Sauss. 



Heliastus guatemala, Sauss. Addit. Prodr. (Edip. p. 91 (1888) \ 



Hdb. Mexico, near Parian (C. C. Beam); Guatemala 1 , Amatitlan (Jas. S. Hine, 

 coll. L. Bruner). 



The specimens of this species seem to differ from the preceding only in wing-colour. 



3. Heliastus venezuelae, Sauss. 



Heliastus Venezuela, Sauss. Prodr. (Edip. p. 213 (1884) x ; Bruner, Bull. Lab. Nat. Hist. Iowa, iii. 

 p. 64, t. 3. fig. 4 (1895) 2 ; Giglio-Tos, Boll. Mus. Zool. Univ. Torino, xii. no. 301, p. 3 (1897) 3 . 



Hah. Nicaragua 2 ; Panama 7 , Darien 3 . — South America, Colombia 1 , Venezuela 1 . 

 Like the preceding, this seems also to be but a variety of H. sumichrasti. 



4. Heliastus costaricensis, Rehn. 



Heliastus costaricensis, Rehn, Proc. Acad. Nat. Sci. Philad. 1905, p. 402, figg. 1-3 \ 

 Eab. Costa Rica, Turrialba (coll. U.S. Nat. Mus. l ). 



